JPH0834137B2 - Insulation film forming method - Google Patents
Insulation film forming methodInfo
- Publication number
- JPH0834137B2 JPH0834137B2 JP63144357A JP14435788A JPH0834137B2 JP H0834137 B2 JPH0834137 B2 JP H0834137B2 JP 63144357 A JP63144357 A JP 63144357A JP 14435788 A JP14435788 A JP 14435788A JP H0834137 B2 JPH0834137 B2 JP H0834137B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical surface
- insulating
- element body
- roller
- insulating paint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は例えば電力用避雷器に適用する酸化亜鉛を
主成分とした非直線抵抗体の素体の円筒面に絶縁被膜を
形成する絶縁被膜形成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the formation of an insulating coating for forming an insulating coating on the cylindrical surface of an element body of a non-linear resistor containing zinc oxide as a main component, which is applied to, for example, a power arrester. It is about the method.
第４図（Ａ）は従来周知の酸化亜鉛を主成分とする非
直線抵抗体を示す側面図、第４図（Ｂ）は第４図（Ａ）
の非直線抵抗体を示す正面図、第５図は非直線抵抗体の
素体の円筒面に絶縁被膜を形成する従来の絶縁被膜形成
方法の一工程を示す概念図である。第４図（Ａ）（Ｂ）
において、（１）は酸化亜鉛を主成分とする円筒形の非
直線抵抗体、（３）はこの非直線抵抗体の素体、（４）
はこの素体の円筒面に形成した緻密な絶縁被膜である。
また、第５図において、（11）は作業台、（12）はこの
作業台の上に載置したタブ、（13）はこのタブの上に装
着した金網、（14）は上記絶縁被膜（４）の素材の絶縁
塗料で酸化ビスマス、酸化珪素、酸化アンチモンの各金
属酸化物に有機バインダを加えて混練したものあり、１
×104〜200×104Cpの粘度を有する。（15）はこの絶縁
塗料を容れた容器である。FIG. 4 (A) is a side view showing a conventionally known non-linear resistor containing zinc oxide as a main component, and FIG. 4 (B) is shown in FIG. 4 (A).
FIG. 5 is a front view showing the non-linear resistor of FIG. 5, and FIG. 5 is a conceptual diagram showing one step of the conventional method for forming an insulation coating on the cylindrical surface of the element body of the non-linear resistance. Figure 4 (A) (B)
In (1), (1) is a cylindrical non-linear resistor whose main component is zinc oxide, (3) is an element body of this non-linear resistor, (4)
Is a dense insulating film formed on the cylindrical surface of this element.
Further, in FIG. 5, (11) is a workbench, (12) is a tab placed on this workbench, (13) is a wire mesh mounted on this tab, and (14) is the insulating coating ( It is an insulating paint of the material of 4) and is kneaded by adding an organic binder to each metal oxide of bismuth oxide, silicon oxide, and antimony oxide. 1
It has a viscosity of × 10 4 to 200 × 10 4 Cp. (15) is a container containing this insulating paint.
次に従来の絶縁被膜形成方法の操作について説明す
る。まず作業台（11）の上にタブ（12）を載置したその
上に金網（13）を装着する。この金網（13）の上に所定
数の素体（３）を堆積したものを必要数だけ載置する。
第５図では３個の素体（３）を堆積したものを３組載置
した例を示している。そして容器（15）に容れた絶縁塗
料を所定数の素体（３）を堆積したものの上方から順次
浴びせ素体（３）の円筒面全体に絶縁塗料（14）を塗着
する。素体（３）に塗着しない絶縁塗料（14）は金網
（13）を透過してタブ（12）に溜集する。このようにし
て円筒面に絶縁塗料（14）の塗着した素体（３）を150
℃位で乾燥させたのち、1000℃以上の高温で焼成すると
円筒面に絶縁被膜（４）を形成した非直線抵抗体（１）
となる。非直線抵抗体（１）の絶縁被膜（４）は非直線
抵抗体（１）の円筒面の電気絶縁性能を決定するもので
あって均一な膜厚が要求される。Next, the operation of the conventional insulating film forming method will be described. First, the tab (12) is placed on the workbench (11), and the wire net (13) is mounted thereon. A required number of depositing a predetermined number of element bodies (3) are placed on the wire net (13).
FIG. 5 shows an example in which three sets of three element bodies (3) are placed. Then, the insulating coating material contained in the container (15) is sequentially poured from above from a predetermined number of element bodies (3) deposited, and the insulating coating material (14) is applied to the entire cylindrical surface of the element body (3). The insulating paint (14) that does not adhere to the element body (3) passes through the wire mesh (13) and collects in the tab (12). In this way, the element body (3) coated with insulating paint (14) on the cylindrical surface
Non-linear resistor (1) with insulating coating (4) formed on the cylindrical surface when dried at about ℃ and fired at a high temperature of 1000 ℃ or more
Becomes The insulating coating (4) of the non-linear resistor (1) determines the electrical insulation performance of the cylindrical surface of the non-linear resistor (1) and is required to have a uniform film thickness.
上記のような従来の絶縁被膜形成方法では金網（13）
の上に所定数の素体（３）を堆積したものを載置しその
上方から絶縁塗料（14）を浴びせて素体（３）の円筒面
全体に絶縁塗料（14）を塗着するのでその膜厚、したが
って絶縁被膜（４）の膜厚が不均一となり個々の非直線
抵抗体（１）の電気的特性のばらつきを生じるほか、所
定数の素体（３）を堆積してその上方から絶縁塗料（1
4）を浴びせるので最上段の素体（３）の上端面にも絶
縁塗料（14）が塗着し、乾燥、焼成する前にこの塗着し
た絶縁塗料（14）を除去しなければならず、更に、能率
が悪くコストがかかりすぎるなどの解決すべき課題があ
った。In the conventional method for forming an insulating film as described above, the wire mesh (13)
A predetermined number of element bodies (3) are placed on top of this, and the insulating paint (14) is poured from above and the insulating paint (14) is applied to the entire cylindrical surface of the element body (3). The film thickness, and hence the thickness of the insulating coating (4) becomes non-uniform, causing variations in the electrical characteristics of the individual non-linear resistors (1). Insulating paint from (1
As it is exposed to 4), the insulating paint (14) must be applied to the upper end surface of the uppermost element body (3), and the applied insulating paint (14) must be removed before drying and firing. Moreover, there are problems to be solved, such as inefficiency and too high cost.
この発明はかかる課題を解決するためになされたもの
であって、絶縁被膜の膜厚を均一にして個々の非直線抵
抗体の電気的特性にばらつきを生じることがなく、また
素体の端面に絶縁塗料が塗着せず、能率よく低いコスト
で絶縁被膜を形成することができる絶縁被膜形成方法を
得ることを目的とする。The present invention has been made to solve the above problems, in which the film thickness of the insulating coating is made uniform, and there is no variation in the electrical characteristics of the individual non-linear resistors, and the end face of the element body is It is an object of the present invention to obtain an insulating coating forming method capable of forming an insulating coating efficiently and at low cost without applying an insulating paint.
この発明に係る絶縁膜形成方法は酸化亜鉛を主成分と
し焼成してなる円筒形の非直線抵抗体の素体を70〜150
℃の温度に加熱する工程、タンク内の酸化ビスマス、酸
化珪素、酸化アンチモンの各金属酸化物と有機バインダ
とからなる絶縁塗料に下部に浸漬して回転自在に保持し
た２本の平行なローラの上に素体を載置し上記ローラを
同じ方向に同じ回転速度で回転させて、ローラの円筒面
と所定の間隙を保持した除滴板によりローラの円筒面に
塗着する絶縁塗料を所定の厚さの塗膜にしたうえ素体の
円筒面に転移塗着する工程、絶縁塗料を円筒面に塗着し
た上記素体を所定の温度で乾燥し高温で焼成して円筒面
に絶縁被膜を形成した非直線抵抗体にする工程を備えた
ものである。The method of forming an insulating film according to the present invention is applied to a cylindrical non-linear resistor element body formed by firing zinc oxide as a main component in an amount of 70-150.
In the process of heating to a temperature of ℃, two parallel rollers held rotatably by being immersed in an insulating paint composed of metal oxides of bismuth oxide, silicon oxide and antimony oxide in a tank and an organic binder and rotatably held Place the element body on top, rotate the roller in the same direction at the same rotation speed, and apply a predetermined amount of insulating paint to the cylindrical surface of the roller with a drip plate holding a predetermined gap with the cylindrical surface of the roller. The process of applying a coating film of a thickness and transfer coating to the cylindrical surface of the element body, drying the above-mentioned element body with the insulating coating applied to the cylindrical surface at a predetermined temperature and baking at a high temperature to form an insulating coating film on the cylindrical surface. It is provided with a step of forming the formed non-linear resistor.
この発明においては素体を70〜150℃の温度に加熱し
て２本のローラの上に載置しローラを回転させてローラ
の円筒面に塗着した所定の厚さの絶縁塗料の塗膜を素体
の円筒面に転移塗着するから素体に絶縁塗料が適当にな
じんで、素体の円筒面に塗着した絶縁塗料の膜厚が均一
になる。In the present invention, the element body is heated to a temperature of 70 to 150 ° C., placed on two rollers, and the rollers are rotated to coat the cylindrical surface of the roller with an insulating coating film of a predetermined thickness. Since the transfer coating is applied to the cylindrical surface of the element body, the insulating coating material appropriately blends into the element body, and the film thickness of the insulating coating material applied to the cylindrical surface of the element body becomes uniform.
第１図はこの発明の一実施例に使用する絶縁塗料塗着
装置を示す概念図、第２図は素体の加熱温度と素体の円
筒面に塗着した絶縁塗料の乾燥後の平均膜厚との関係を
示す特性曲線図、第３図は素体の加熱温度と素体の円筒
面に塗着した絶縁塗料の乾燥後の膜厚のばらつきとの関
係を示す特性曲線図である。第１図において（３），
（14）は上記従来の絶縁被膜形成方法におけるものと同
一のものである。（21）は上記絶縁塗料（14）を溜めた
タンク、（22）は下部を上記絶縁塗料（14）に浸漬した
金属からなる滑らかな円筒面の２本のローラ、（23）は
このローラの円筒面と所定の間隙を保持した除滴板であ
る。FIG. 1 is a conceptual diagram showing an insulating paint coating device used in one embodiment of the present invention, and FIG. 2 is a heating temperature of the element body and an average film after drying of the insulating coating material applied to the cylindrical surface of the element body. FIG. 3 is a characteristic curve diagram showing the relationship with the thickness, and FIG. 3 is a characteristic curve diagram showing the relationship between the heating temperature of the element body and the variation in the film thickness of the insulating coating material applied to the cylindrical surface of the element body after drying. In FIG. 1, (3),
(14) is the same as that in the conventional method for forming an insulating coating. (21) is a tank in which the insulating paint (14) is stored, (22) is two rollers having a smooth cylindrical surface made of metal, the lower part of which is immersed in the insulating paint (14), and (23) is this roller. It is a drip removal plate that maintains a predetermined gap with the cylindrical surface.
次にこの発明の一実施例の操作について説明する。ま
ず素体（３）を図示はしないが金属メッシュからなるコ
ンベアに載せて移動させながら連続加熱して70〜150℃
の温度にする。この温度を維持しながら素体（３）を２
本のローラ（22）の上に載置し各ローラ（22）を同じ方
向に同じ回転速度、例えば５〜100mm/secの周速度で回
転させるとローラ（22）の円筒面に塗着した絶縁塗料
（14）はローラ（22）の円筒面と除滴板（23）との所定
の間隙に対応した所定の厚さの塗膜になる。絶縁塗料
（14）の粘度（１×104〜200×104Cp）が高いので、ロ
ーラ（22）は金属製で円筒面の滑らかなものがよく、ま
たその回転速度が低いと素体（３）の両端面に絶縁塗料
（14）が付着し、その回転速度が高いとローラ（22）の
円筒面に塗着する絶縁塗料（14）の塗膜に気泡を生じ
る。ローラ（22）の回転によりその上に載置した素体
（３）も回転し通常２回転でローラ（22）の円筒面に塗
着した絶縁塗料（14）の塗膜が素体（３）の円筒面に転
移塗着する。素体（３）の円筒面に塗着する絶縁塗料
（14）の平均膜厚は素体（３）の加熱温度と関係し、70
〜150℃の範囲においてもっとも安定した膜厚が得られ
る（第２図参照）。また素体（３）の円筒面に塗着する
絶縁塗料（14）の膜厚のばらつき、すなわち〔（最大膜
厚−最小膜厚）／平均膜厚〕×100％も素体（３）の加
熱温度と関係して同じく70〜150℃の範囲においてもっ
とも小さくなる（第３図参照）。これは素体（３）を70
〜150℃の温度に加熱すると、塗着中にこの絶縁塗料（1
4）が素体（３）に適当になじむからである。この温度
が低すぎるとなじみが少なくなって膜厚のばらつきが大
きくなり、また、この温度が高すぎるとなじむ間に乾燥
してしまい、やはり膜厚のばらつきが大きくなる。この
絶縁塗料（14）を円筒面に塗着した素体（３）を図示し
ないが150℃位で乾燥させたのち、1000℃以上の高温で
焼成すると円筒面に絶縁被膜（４）を形成した非直線抵
抗体（１）が得られる。Next, the operation of one embodiment of the present invention will be described. First, the element body (3) is placed on a conveyor made of a metal mesh (not shown) and continuously heated while being moved to 70 to 150 ° C.
To the temperature of. While maintaining this temperature, 2
Insulation applied to the cylindrical surface of the roller (22) when it is placed on a book roller (22) and each roller (22) is rotated in the same direction at the same rotation speed, for example, a peripheral speed of 5 to 100 mm / sec. The paint (14) becomes a coating film having a predetermined thickness corresponding to a predetermined gap between the cylindrical surface of the roller (22) and the drip plate (23). Since the insulating paint (14) has a high viscosity (1 × 10 4 to 200 × 10 4 Cp), the roller (22) is preferably made of metal and has a smooth cylindrical surface. The insulating paint (14) adheres to both end faces of 3), and when the rotation speed is high, bubbles are generated in the coating film of the insulating paint (14) applied to the cylindrical surface of the roller (22). The element body (3) placed on the roller (22) is also rotated by the rotation of the roller (22), and the coating film of the insulating paint (14) applied to the cylindrical surface of the roller (22) is normally rotated twice to form the element body (3) Transfer coating to the cylindrical surface of. The average film thickness of the insulating paint (14) applied to the cylindrical surface of the element body (3) is related to the heating temperature of the element body (3),
The most stable film thickness is obtained in the range of up to 150 ° C (see Fig. 2). In addition, the variation in the film thickness of the insulating paint (14) applied to the cylindrical surface of the element body (3), that is, [(maximum film thickness-minimum film thickness) / average film thickness] x 100% is It also becomes the smallest in the range of 70 to 150 ° C in relation to the heating temperature (see Fig. 3). This is 70 (3)
When heated to a temperature of ~ 150 ° C, this insulating paint (1
This is because 4) fits the body (3) appropriately. If this temperature is too low, the conformability is reduced and the variation in the film thickness becomes large, and if the temperature is too high, the film dries while conforming, and the variation in the film thickness also becomes large. Although not shown, the element body (3) coated with the insulating paint (14) on the cylindrical surface was dried at about 150 ° C. and then baked at a high temperature of 1000 ° C. or more to form an insulating coating (4) on the cylindrical surface. A non-linear resistor (1) is obtained.
この発明は以上説明したとおり酸化亜鉛を主成分とし
て焼成してなる円筒形の非直線抵抗体の素体を70〜150
℃の温度に加熱する工程、タンク内の酸化ビスマス、酸
化珪素、酸化アンチモンの各金属酸化物と有機バインダ
とからなる絶縁塗料に下部を浸漬して回転自在に保持し
た２本の平行なローラの上に素体を載置しローラを同じ
方向に同じ回転速度で回転させてローラの円筒面と所定
の間隙を保持した除滴板によりローラの円筒面に塗着す
る絶縁塗料を所定の厚さの塗膜にしたうえ素体の円筒面
に転移塗着する工程、絶縁塗料を円筒面に塗着した素体
を所定の温度で乾燥し高温で焼成して円筒面に絶縁被膜
を形成した非直線抵抗体にする工程を備えたので絶縁被
膜の膜厚を均一にして個々の非直線抵抗体の電気的特性
がばらつかず、また素体の端面に絶縁塗料の塗着するこ
とがなく、能率よく低いコストで絶縁被膜を形成するこ
とができると云う効果がある。As described above, according to the present invention, a cylindrical non-linear resistor element body formed by firing zinc oxide as a main component is 70 to 150
In the process of heating to a temperature of ℃, two parallel rollers rotatably held by immersing the lower part in an insulating paint consisting of metal oxides of bismuth oxide, silicon oxide and antimony oxide in a tank and an organic binder. Place the element body on top and rotate the roller in the same direction at the same rotation speed to apply a predetermined thickness of insulating paint that is applied to the cylindrical surface of the roller by the drip plate holding a predetermined gap with the cylindrical surface of the roller. The process of applying the coating film on the cylindrical surface of the element body and transferring it onto the cylindrical surface of the element body is performed by drying the element body with the insulating paint applied on the cylindrical surface at a predetermined temperature and firing at a high temperature to form an insulating film on the cylindrical surface. Since it has a step of making a linear resistor, the thickness of the insulating film is made uniform and the electrical characteristics of the individual non-linear resistors do not vary, and there is no need to apply insulating paint to the end faces of the element body. Insulation coating can be formed efficiently and at low cost There is a result.
第１図はこの発明の一実施例に使用する絶縁塗料塗着装
置を示す概念図、第２図は素体の加熱温度と素体の円筒
面に塗着した絶縁塗料の乾燥後の平均膜厚との関係を示
す特性曲線図、第３図は素体の加熱温度と素体の円筒面
に塗着した絶縁塗料の乾燥後の膜厚のばらつきとの関係
を示す特性曲線図、第４図（Ａ）（Ｂ）はそれぞれ従来
周知の酸化亜鉛を主成分とする非直線抵抗体を示す側面
図と正面図、第５図は従来の絶縁被膜形成方法の一工程
を示す概念図である。 図において（１）は非直線抵抗体、（３）は素体、
（４）は絶縁被膜、（14）は絶縁塗料、（21）はタン
ク、（22）はローラ、（23）は除滴板である。 なお各図中、同一符号は同一または相当部分を示す。FIG. 1 is a conceptual diagram showing an insulating paint coating device used in one embodiment of the present invention, and FIG. 2 is a heating temperature of the element body and an average film after drying of the insulating coating material applied to the cylindrical surface of the element body. FIG. 4 is a characteristic curve diagram showing the relationship with the thickness, FIG. 3 is a characteristic curve diagram showing the relationship between the heating temperature of the element body and the variation in the film thickness of the insulating coating material applied to the cylindrical surface of the element body after drying, FIG. FIGS. 1A and 1B are a side view and a front view, respectively, showing a conventionally known nonlinear resistor containing zinc oxide as a main component, and FIG. 5 is a conceptual diagram showing one step of a conventional insulating film forming method. . In the figure, (1) is a non-linear resistor, (3) is an element body,
(4) is an insulating film, (14) is an insulating paint, (21) is a tank, (22) is a roller, and (23) is a drip plate. In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−196501（ＪＰ，Ａ) 実開 昭54−64167（ＪＰ，Ｕ) 実開 昭61−101942（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-61-196501 (JP, A) Actually open 54-64167 (JP, U) Actually open 61-101942 (JP, U)
Claims (1)
の非直線抵抗体の素体を70〜150℃の温度に加熱する工
程、タンク内の酸化ビスマス、酸化珪素、酸化アンチモ
ンの各金属酸化物と有機バインダとからなる絶縁塗料に
下部を浸漬して回転自在に保持した２本の平行なローラ
の上に上記素体を載置し上記ローラを同じ方向に同じ回
転速度で回転させて上記ローラの円筒面と所定の間隙を
保持した除滴板により上記ローラの円筒面に塗着する上
記絶縁塗料を所定の厚さの塗膜にしたうえ上記素体の円
筒面に転移塗着する工程、上記絶縁塗料を円筒面に塗着
した上記素体を所定の温度で乾燥し高温で焼成して円筒
面に絶縁被膜を形成した上記非直線抵抗体にする工程を
備えたことを特徴とする絶縁被膜形成方法。1. A process of heating a cylindrical non-linear resistor body formed by firing zinc oxide as a main component to a temperature of 70 to 150 ° C., each of bismuth oxide, silicon oxide and antimony oxide in a tank. The base is placed on two parallel rollers, which are rotatably held by immersing the lower part in an insulating paint composed of a metal oxide and an organic binder, and the rollers are rotated in the same direction at the same rotation speed. The insulating coating material applied to the cylindrical surface of the roller is formed into a coating film of a predetermined thickness by a drip removal plate which maintains a predetermined gap with the cylindrical surface of the roller, and then transfer coating is applied to the cylindrical surface of the element body. And a step of drying the element body having the cylindrical surface coated with the insulating paint at a predetermined temperature and firing at a high temperature to form the non-linear resistor having an insulating film formed on the cylindrical surface. And an insulating film forming method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63144357A JPH0834137B2 (en) | 1988-06-10 | 1988-06-10 | Insulation film forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63144357A JPH0834137B2 (en) | 1988-06-10 | 1988-06-10 | Insulation film forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01312801A JPH01312801A (en) | 1989-12-18 |
| JPH0834137B2 true JPH0834137B2 (en) | 1996-03-29 |
Family
ID=15360225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63144357A Expired - Lifetime JPH0834137B2 (en) | 1988-06-10 | 1988-06-10 | Insulation film forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0834137B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7101099B1 (en) | 1998-08-19 | 2006-09-05 | Canon Kabushiki Kaisha | Printing head, head cartridge having printing head, printing apparatus using printing head, and printing head substrate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219590A (en) * | 2016-05-31 | 2019-01-15 | 恩亿凯嘉股份有限公司 | Method for producing cylindrical honeycomb structure with film and method for producing catalyst |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5464167U (en) * | 1977-10-17 | 1979-05-07 | ||
| JPS61101942U (en) * | 1984-12-12 | 1986-06-28 | ||
| JPS61196501A (en) * | 1985-02-26 | 1986-08-30 | 株式会社東芝 | Insulation film former for non-linear resistor |
-
1988
- 1988-06-10 JP JP63144357A patent/JPH0834137B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7101099B1 (en) | 1998-08-19 | 2006-09-05 | Canon Kabushiki Kaisha | Printing head, head cartridge having printing head, printing apparatus using printing head, and printing head substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01312801A (en) | 1989-12-18 |
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